TY - JOUR
T1 - Identification of low-momentum muons in the CMS detector using multivariate techniques in proton-proton collisions at sqrt(s) = 13.6 TeV
AU - the CMS Collaboration
AU - Anthony, D.
AU - Brooke, Jim
AU - Bundock, Aaron
AU - Bury, Florian J J
AU - Clement, Emyr J
AU - Cussans, David G
AU - Flächer, H.
AU - Goldstein, Joel
AU - Heath, Helen F
AU - Holmberg, Mei-Li
AU - Kreczko, Lukasz
AU - Paramesvaran, Sudarshan
AU - Robertshaw, Liam
AU - Smith, Vincent J
AU - Walkingshaw Pass, Katie L M R
AU - et al,
N1 - Publisher Copyright:
© 2025 CERN for the benefit of the CMS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab.
PY - 2025/4/17
Y1 - 2025/4/17
N2 - "Soft" muons with a transverse momentum below 10 GeV are featured in many processes studied by the CMS experiment, such as decays of heavy-flavor hadrons or rare tau lepton decays. Maximizing the selection efficiency for these muons, while simultaneously suppressing backgrounds from long-lived light-flavor hadron decays, is therefore important for the success of the CMS physics program. Multivariate techniques have been shown to deliver better muon identification performance than traditional selection techniques. To take full advantage of the large data set currently being collected during Run 3 of the CERN LHC, a new multivariate classifier based on a gradient-boosted decision tree has been developed. It offers a significantly improved separation of signal and background muons compared to a similar classifier used for the analysis of the Run 2 data. The performance of the new classifier is evaluated on a data set collected with the CMS detector in 2022 and 2023, corresponding to an integrated luminosity of 62 fb-1.
AB - "Soft" muons with a transverse momentum below 10 GeV are featured in many processes studied by the CMS experiment, such as decays of heavy-flavor hadrons or rare tau lepton decays. Maximizing the selection efficiency for these muons, while simultaneously suppressing backgrounds from long-lived light-flavor hadron decays, is therefore important for the success of the CMS physics program. Multivariate techniques have been shown to deliver better muon identification performance than traditional selection techniques. To take full advantage of the large data set currently being collected during Run 3 of the CERN LHC, a new multivariate classifier based on a gradient-boosted decision tree has been developed. It offers a significantly improved separation of signal and background muons compared to a similar classifier used for the analysis of the Run 2 data. The performance of the new classifier is evaluated on a data set collected with the CMS detector in 2022 and 2023, corresponding to an integrated luminosity of 62 fb-1.
U2 - 10.1088/1748-0221/20/04/P04021
DO - 10.1088/1748-0221/20/04/P04021
M3 - Article (Academic Journal)
SN - 1748-0221
VL - 20
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 4
M1 - P04021
ER -